$Improved measurement of branching fractions for ππ transitions among Υ(nS) states$

Improved measurement of branching fractions for ππ transitions among Υ(nS) states

Using samples of (5.93±0.10)×106 Υ(3S) decays and (9.11±0.14)×106 Υ(2S) decays collected with the CLEO detector, we report improved measurements of the following branching fractions: B(Υ(3S)→Υ(1S)π+π-)=(4.46±0.01±0.13)%, B(Υ(2S)→Υ(1S)π+π-)=(18.02±0.02±0.61)%, B(Υ(3S)→Υ(1S)π0π0)=(2.24±0.09±0.11)%, B(...

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Bibliographic Details
Main Authors:	Bhari, SR, Pedlar, T, Cronin-Hennessy, D, Gao, K, Hietala, J, Kubota, Y, Klein, T, Lang, B, Poling, R, Scott, A, Zweber, P, Dobbs, S, Metreveli, Z, Seth, K, Tomaradze, A, Libby, J, Martin, L, Powell, A, Wilkinson, G, Ecklund, K, Love, W, Savinov, V, Mendez, H, Ge, J, Miller, D
Format:	Journal article
Language:	English
Published:	2009

Improved measurement of branching fractions for ππ transitions among Υ(nS) states

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